hartman



(No Model.) 2 Sheets-Sheet; 1

D.B.HARTMAN. METAL SEAM TURNING TOOL.

No. 595,170. Patented Dec; 7,1897.

(No Model.) 2 Sheets-Sheet 2.

D. B. HARTMAN.

METAL SEAM TURNING TOOL.

No. 595,170. Patented Dec. 7,1897.

UniTEn STATES PATENT EEicE.

DANIEL B. IIARTMAN, OF MANCHESTER, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO MILTON R. WVARNER, OF SAME PLACE.

METAL-SEAM-TURNING TOOL.

SPECIFICATION forming part of Letters Patent No. 595,170, dated December 7', 1897.

Application filed August 17, 1897.

T0 aZZ whom it may concern.-

Be it known that I, DANIEL B. HARTMAN, a citizen of the United States, residing at Manchester, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Metal-Seam-Turning Tools; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable'others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to metal-seaming tools; and it has for its object to provide a tool by means of which a flange to a sheet of roofingtin may be bent or turned to an acute angle with the vertical portion of the flange and subsequently pressed into close contact with the vertical flange on the adjoining sheet of roofing tin, thus forming the complete seam or joint between the sheets of tin, the tool being so formed that it is adapted for use in forming double seams in tin roofing.

To provide improved features of construction in a tool for the purposes mentioned and to increase the efficiency of the tool, the invention consists in the construction and in the combination of parts hereinafter particularly described and then sought to be specifically defined by the claims, reference being had to the accompanying drawings, forming a part hereof, and in which- Figure l is a side view of the tool; Fig. 2, an end View. Figs. 3 to 6 are end views of adjoining sheets, showing the different bends in forming the seam, Figs. 3 and 4 showing the single seam and Figs. 5 and 6 the double or final seam.

In the drawings, the letters A and A represent two jaws which are connected to the arms B and B, said arms being pivotally connected together at C and provided, respectively, with the levers D and D, so that by drawing said levers apart the jaws will be opened and by bringing the levers together the jaws will be closed.

The jaw A is provided near its upper edge on its inside face with a longitudinally-extending groove E, which has a vertical wall Serial No. 648,560. (No model.)

a and an inclined base or bottom I), and the jaw A is likewise formed with a longitudinally-extending groove E, which is formed with a vertical wall a and an inclined base or bottom b. The groove in one jaw is formed in a higher plane than the groove in the other jaw for purposes hereinafter specified.

To the jaw A there is attached a verticallysliding plate F, which preferably is attached to the jaw by means of pins 0, which extend through vertical slots cl in cars G, which extend upward from the jaw. A vertically-slid ing plate F is attached to the jaw A, preferably by the pins 0, which extend through vertical slots cl, made in the ears G", which extend upward from the jaw A. The under faces of these sliding plates are beveled to correspond with the beveled or inclined bottoms to the grooves formed in the two jaws, and the plates are held normally in a raised position by means of suitable springs H and H, which may be connected at one end to the jaws and passed under lugs or pins I and I, projecting from the sliding plates, as illus trated. These sliding plates are adapted to be depressed by means of foot pedals or levers J and J, one of which is pivoted to the arm 13 and extends to the opposite side of the tool and the other one of which is pivoted to the arm B and extends in the opposite direction to the lever J, so to lie on the opposite side of the tool. These levers may be guided in their movements by the keepers K and K, attached, respectively, to the arms B and B.

In order that one of the sliding plates may be depressed without affecting in any wise the other plate, the plates are formed with the shoulders or extensions L and L, respectively, said shoulders or extensions being located so as to be out of line with each other and thus enable one plate to be depressed without affecting the other when its adjacent foot-lever is pressed down, so as to contact with the shoulder or extension.

This tool is particularly well adapted for use in connection with a standard seamer now upon the market, which seamer is constructed so as to turn to one side the upper portion of the flange to one of the tin roofingsheets, but may be used to advantage with other standard seamers upon the market.

The purpose of my device is to depress or turn to an acute angle to the vertical portion of the flange that portion of the flange which by the other tool just mentioned is turned at a right angle, or approximately so, to the vertical flange, so as to bring said flange into a position in which it may be grasped between the jaws and be then pressed into close contact with the flange of the adjoining roofing-sheet. After the flange has been turned to a right angle, or approximately so, as just mentioned, my tool is applied, so as to bring the groove of the jaw A beneath the turned flange, when the jaws are brought together and the foot-lever J is depressed, so as to force down the plate F, thus turning the portion of the flange.

roofing-sheet. The jaws are then brought together, so as to press the turned flange of the roofing-sheet into close contact with the flange of the adjoining roofing-sheet. The

first seam to the roofing-sheet is thus formed, and when the second seam is to be formed the upwardly-extending flanges of the roofing-sheet are turned, as in the first instance, 5 and then my tool is reversed, so as to bring into play the second jaw A, which will oper- 1 ate in the same manner as the first jaw; but 1 inasmuch as the flanges are shorter after the first seam has been formed the jaw A and its sliding plate F are not adapted tofor-m the second operation for the reason that they are in too high a plane for the reduced flange, and consequently the groove in the jaw A is formed in .a lower plane than the groove in the jaw A. By forming the jaws with the grooves, as described, and providing each jaw with its sliding plate the one tool isadapted to perform the two operations described in making a double seam to the roofin g-sheets.

It will be observed that the bottom face .of the jaw A and also the bottom face of the jaw A is curved from its outer to its inner edge. This is for the purpose of permitting either jaw A or jaw A, as one or the other may be used, to swing outward from under the overturned portion .of the flange to the roofingsheet. WVhile both of the jaws are formed as just described, still it will be understood that in operation the effect is the same as if only the jaw whose groove is beneath the turned flange was so formed, because it is that particular jaw which is to be removed from under the overturned flange of the sheet roofing. The other jaw is likewise formed, so that when it is employed for making the double seam it can operate in the same manner as the jaw employed for making the first seam.

I have illustrated and described what I connot wish to be understood as confining myself to such details, because it is obvious that changes can be made therein without departing from the essential features of the invention.

Having described my invention and set forth its merits, what I claim is- 1. In ametal-seaming tool, the combination of two hinged jaws each formed with a longitudinally-extendin g groove formed with an inclined bottom, the groove in one jaw being in a higher plane than the groove in the other jaw, a sliding plate to each jaw having an inclined lower face corresponding to the inclined bottom of the grooves, levers for operating the jaws, and foot-levers for actuating the sliding plates, substantially as and for the purposes described.

2. In ametal-seaming tool, the combination of two hinged jaws each provided with a longitudinally-extending groove, the groove in one jaw being in a different plane from the groove in the other jaw, a vertically-sliding plate foreach jaw, a spring for normally holding each plate in a raisedposition, foot-levers for actuatingthe sliding plates, said levers being arranged so that one can be operated to actuate its sliding plate without affecting the other plate, andlevers for actuating the jaws, substantially as and for the purposes described.

. 3. Ina metal-seaming tool, the combination of two jaws each formed with alongitudinally-extending groove, the groove in one jaw being in a different plane from the groove in the other jaw, arms to which the jaws are attached, hand-levers extending from the arms, a vertically-sliding plate for each jaw provided with shoulders or extensions out of line with each other, and foot-levers pivoted to the arms and arranged so as to bear against the shoulders or extensions on the sliding plates to enable one plate to be depressed without affecting the other, substantially as and for the purposes described.

4. In a metal-seaming tool, the combination of two jaws each provided with a longitudinally-extending groove and with upwardlyextending slotted ears, vertically sliding plates, each having pins projecting through the slotted ears of the jaws, springs for normally retaining said plates in a raised position, arms to which the jaws are attached,

hand-levers extending from the arms to opcrate the jaws, and foot-levers pivoted to the arms and arranged to bear one against each of the sliding plates for the purpose of actuating one plate without affecting the other, substantially as and for the purposes described.

In testimony whereof I affix my signature in presence of two witnesses.

DANIEL B. HARTMAN.

Witnesses:

ZACH. T. METZGER, A. B. MELHORN. 

